Weight

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v50.14 · v0.47.05 This article is about the current version of DF. Note that some content may still need to be updated. More Info · V

Weight, or sometimes more correctly termed mass, is an item property, and is measured in the unit Γ, also sometimes known as urists, or more commonly as the kilogram, its equivalent real-life unit.

Weight is largely used by the game to determine how fast someone or something should move, due to encumbrance effects and carry weight restrictions; to calculate damage, since object mass factors into impact momentum; and to some extent to make temperature calculations, as mass factors into heat capacity. Note that, for DF, weight and mass are currently indistinguishable because, as it stands, DF gravity is uniform both across the whole universe and from world to world and buoyancy isn't implemented.

Weight is displayed as a quantity associated with an item. Weight calculation is not entirely straightforward, since each item category — or sometimes even individual items — have their own formula for determining weight.

Weight Calculation

The general form for calculating weight in DF is to take the material density (as found in the raws) multiplied by the item's volume.

Weight (in Γ) = Density (in kg/m³) * Volume (in cm³) / 1,000,000 (cm³/m³)

Internally, all custom volume/capacity numbers are rounded down to the nearest multiple of 10 - thus, if you define a tool with [SIZE:15], it will actually behave as if you had specified [SIZE:10].

An item's volume is also used to determine workshop clutter as well as how many items can fit into a container.

Assorted item weights

Weight displayed in-game is rounded down to a whole number.

Item	Weight in Γ(kg)	Notes
Iron anvil	78.500	Same as a steel anvil.
Aluminum bar	16.200	Least dense normal metal.
Steel bar	47.100	Same as an iron or pig iron bar.
Platinum bar	128.400	Most dense metal.
Feather (wood) barrel	2.000	Least dense wood, found only in good biomes.
Willow barrel	7.800	Least dense common wood, found near water in many biomes.
Tunnel tube barrel	10.000	Least dense cavern wood, found only in lower caverns.
Tower cap barrel	12.000	Same as a bed of acacia, ash, fungiwood, goblin-cap, mahogany, pear, or spore wood.
Blood thorn barrel	25.000	Most dense wood, found only in lowest caverns.
Jet block	7.920	Least dense non-economic stone.
Shale block	13.500
Cinnabar block	48.600	Most dense non-economic stone.
Sheep cheese	1.200	All cheeses seem to use the default density of 1200 kg/m3.
Willow large pot	1.950	Least dense common wood, found near water in many biomes.
Tower cap large pot	3.000	Same as a bed of acacia, ash, fungiwood, goblin-cap, mahogany, pear, or spore wood.
Blood thorn large pot	6.250	Most dense wood, found only in lowest caverns.
Jet large pot	6.600	Least dense non-economic stone.
Earthenware large pot	6.800	Must be glazed to hold liquids.
Stoneware large pot	10.000	Does not need glazing.
Shale large pot	11.250
Porcelain large pot	12.015	Not an unlimited resource like other ceramics.
Glass large pot	13.000	All three types of glass have the same density.
Cinnabar large pot	40.500	Most dense non-economic stone.
Feather log	5.000	Least dense wood, found only in good biomes.
Willow log	19.500	Least dense common wood, found near water in many biomes.
Tunnel tube log	25.000	Least dense cavern wood, found only in lower caverns.
Tower cap log	30.000	Same as a bed of acacia, ash, fungiwood, goblin-cap, mahogany, pear, or spore wood.
Blood thorn log	62.500	Most dense wood, found only in lowest caverns.
Jet stone	132.000	Least dense non-economic stone.
Shale stone	225.000
Cinnabar stone	810.000	Most dense non-economic stone.

See also

• Density
• Size

"Weight" in other Languages Dwarven: âl Elven: eba Goblin: deslo Human: ketas